Pith Number

pith:LXNCUGMA

pith:2018:LXNCUGMAQHNAH7IA2TPPDVB555

not attested not anchored not stored refs pending

An output-sensitive algorithm for the minimization of 2-dimensional String Covers

Alexandru Popa, Andrei Tanasescu

arxiv:1806.08131 v2 · 2018-06-21 · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LXNCUGMAQHNAH7IA2TPPDVB555}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:47:12.609101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5dda2a198081da03fd00d4def1d43def57ef8c10bc1dfef452da77de0ec43ee9

Aliases

arxiv: 1806.08131 · arxiv_version: 1806.08131v2 · doi: 10.48550/arxiv.1806.08131 · pith_short_12: LXNCUGMAQHNA · pith_short_16: LXNCUGMAQHNAH7IA · pith_short_8: LXNCUGMA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LXNCUGMAQHNAH7IA2TPPDVB555 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5dda2a198081da03fd00d4def1d43def57ef8c10bc1dfef452da77de0ec43ee9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c875974d0c6a126e6e9ddf5f8425b614d36f7f07c59176eab20f13ec649287b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-06-21T09:23:03Z",
    "title_canon_sha256": "8d9e9d774121b0459341fa6ac3b50d6f1b10d24486a7f81f0631b6c9ef6fbe24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08131",
    "kind": "arxiv",
    "version": 2
  }
}